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0feb977bbf
This patch fixes use of Altivec pack intrinsics on little-endian PowerPC systems. Since little-endian operation only affects the load and store instructions, the semantics of pack (and other) instructions that take two input vectors implicitly change: the pack instructions still fill a register placing values from the first operand into the "high" parts of the register, and values from the second operand into the "low" parts of the register, but since vector loads and stores perform an endian swap, the high parts end up at high memory addresses. To still achieve the desired effect, we have to swap the two inputs to the pack instruction on little-endian systems. This is done automatically by the back-end for instructions generated by LLVM, but needs to be done manually when emitting intrisincs (which still result in that instruction being emitted directly). Signed-off-by: Ulrich Weigand <ulrich.weigand@de.ibm.com> Signed-off-by: Maarten Lankhorst <dev@mblankhorst.nl> |
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| Android.common.mk | ||
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| autogen.sh | ||
| CleanSpec.mk | ||
| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
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| VERSION | ||
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons osmesa mesagdi to build classic mesa Windows GDI drivers; or scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see http://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.